c# – 实体框架：InvalidOperationException：无效的操作.连接已

我的C#代码如下所示：

using (var context = new MyDataContext())
    numberOfEffectedRows = context.MySPName(this.Id);

在大多数情况下(99.9％)执行,这很好.但是,有时它会因此错误而失败：

System.InvalidOperationException: Invalid operation. The connection is closed.
   at System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command)
   at System.Data.SqlClient.SqlInternalTransaction.Rollback()
   at System.Data.SqlClient.SqlInternalTransaction.Dispose(Boolean disposing)
   at System.Data.SqlClient.SqlTransaction.Dispose(Boolean disposing)
   at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext](TTarget target,Action`2 operation,TInterceptionContext interceptionContext,Action`3 executing,Action`3 executed)
   at System.Data.Entity.Infrastructure.Interception.DbTransactionDispatcher.Dispose(DbTransaction transaction,DbInterceptionContext interceptionContext)
   at System.Data.Entity.Core.EntityClient.EntityTransaction.Dispose(Boolean disposing)
   at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func,IDbExecutionStrategy executionStrategy,Boolean startLocalTransaction,Boolean releaseConnectionOnSuccess)
   at System.Data.Entity.Core.Objects.ObjectContext.<>c__DisplayClass4b.<ExecuteFunction>b__49()
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
   at System.Data.Entity.Core.Objects.ObjectContext.ExecuteFunction(String functionName,ObjectParameter[] parameters)
   at ***.MyDataContext.MySPName(Nullable`1 Id) in ***
   at ***.DoSomething() in ***

发生这种情况时：

>我不知道为什么会这样.在我看来,这似乎是随机的.
>我不知道我的“MySPName”是否被执行了.

有人知道为什么会这样,以及我怎么知道我的存储过程是否被执行？